Smallpox was once a common, deadly disease, that killed a third of those who contracted it. 200 years ago, it was discovered that vaccination could prevent smallpox. Learn more about the fight against smallpox in our videos
Ebola viruses and Marburg virus are classified as biosafety level 4 (BSL-4) pathogens and require special containment and barrier protection measures, in particular for people taking care of infected patients or bodies.